13 Gross Ingredients Hidden in Your Beauty Products

Lipstick that contains bug juice, soap made of human breast milk ... see what you've been slathering on your face and body

Road Kill (tallow) According to Skin Deep Cosmetic Safety Database, the process of rendering animal fat consists of boiling animal carcasses in a pot to create fatty byproducts. The decaying animals used come from every source imaginable: lab animals, deadstock (animals that die before they reach the slaughterhouse), euthanized zoo and shelter animals, expired meat from grocery stores and -- wait for it -- road kill. The majority of this fat is used as a skin-conditioning agent and an emollient in cosmetics like lipstick, eyeshadow and soap.